Edexcel IGCSE Biology Double Award Revision

A guide to the Edexcel IGCSE Biology Double Award Syllabus for 2020

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Wednesday, 29 June 2016

3.18 describe the determination of the sex of offspring at fertilisation, using a genetic diagram

3.18 •use a genetic diagram to show your working (with XX and XY as the genotypes)

•it should be 50% for each

Posted by Andrew at 12:02

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Biological Molecules (6)
Cell Structure (3)
Characteristics of Living Organisms (1)
Cloning (23)
Co-ordination and Response (12)
Excretion (10)
Food Production (7)
Gas Exchange (9)
Genetic Modification (4)
Levels of Organisation (1)
Movement of Substances into and out of Cells (4)
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Section 1: The Nature and Variety of Living Organisms (3)
Section 2: Structures and Functions in Living Organisms (12)
The Organism in the Environment (3)
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Wednesday, 29 June 2016

3.18 describe the determination of the sex of offspring at fertilisation, using a genetic diagram

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